JPS63121519A - Air-conditioning device for automobile - Google Patents

Abstract

PURPOSE:To improve the comfortability of airconditioning at front and rear seats by providing a means for detecting a thermal environment in a cabin and directing an airconditioned wind to rear seats when the steady state of the thermal environment at the front seats has been detected. CONSTITUTION:Output from a front seat room temperature sensor 25 and a rear seat room temperature sensor 29 is inputted to a control means 28. This control means 28 makes judgement as to whether a thermal environment at front seats is steady or not, on the basis of output from the front seat room temperature sensor 25. If the environment is not steady, the valve of an air quantity and direction setting devices 31 for side vents 16 and 19 and center vents 17 and 18 is opened, thereby concentrating the diffusion of airconditioned wind to the front seats. And when the thermal environment at the front seats has become steady and room temperature at the rear seats has not reached a predetermined level, the air diffusion direction of the center vents 17 and 18 is changed toward the rear seats and an air distribution ratio of the center vents 17 and 18 to the side vents 16 and 19 is taken to give a larger value for the center vents 17 and 18. According to the aforesaid constitution, comfortability at both front and rear seats can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an automotive air conditioner for making the thermal environment comfortable in a vehicle interior, and especially an automotive air conditioner for improving the thermal environment for front and rear seat passengers. It is related to the device.

1. Conventionally, as an air conditioner for automobiles, for example,
There is a publication No. 15008. According to this, the technology prevents the front seats from getting too cold by concentrating the air-conditioned air on the front seats when the vehicle is cooling down, and reducing the air volume and diffusing the air-conditioned air when the thermal environment reaches a steady state. Disclosed.

In addition, in Japanese Utility Model Application Publication No. 60-45114, a center vent located in the center of the instrument panel is provided with a separate air outlet for the rear seats that blows air upward to direct the air to the rear seats. A technology has been disclosed in which the person in the front seat changes the direction of air distribution by manually switching both air outlets when it is determined that the environment is the same.

0 is about to q However, in the former case, with such conventional automobile air conditioning systems, the air volume is reduced and the person in the front seat receives diffused air, making it possible to enjoy comfort. However, there was a problem in that the cooling power was weakened for people in the rear seats, making them extremely uncomfortable.

In addition, in the latter case, it is not only troublesome, but also the driver may forget the operation, and this operation is often performed by the driver when the vehicle is being driven by another person, giving the driver a new experience. This poses a problem in that it imposes a burden on the operator and furthermore requires the installation of another air outlet.

In consideration of the above problem, the present invention aims to direct the limited air-conditioning capacity of air-conditioned air toward the rear seats after the thermal environment in the front seats becomes steady, thereby improving the air conditioning of the front and rear cold rain passengers. The purpose of the present invention is to provide an automobile air conditioner that can satisfy comfort.

In order to achieve this object of fortune-telling, the first invention provides an automotive vehicle that air-conditions the front and rear seats in the vehicle interior by blowing out air-conditioned air from the outlet of the instrument panel at the front of the vehicle interior. In the air conditioner, a wind direction variable means for changing the direction of the conditioned air blown out from the outlet to the front seats and rear seats, and a thermal environment detection means for detecting the thermal environment in the vehicle interior;
An air conditioner for an automobile, comprising a control means for detecting that the thermal environment of the front seat has reached a steady state by the thermal environment detection means, and operating the wind direction variable means to distribute air to the rear seats. According to a second aspect of the present invention, there is provided an air conditioner for an automobile that blows out air-conditioned air from an outlet in an instrument panel at the front of a vehicle interior to air condition the front seats and rear seats in a vehicle interior. A wind direction variable means for changing the direction of wind distributed to the front seats and the rear seats; an air volume variable means for changing the volume of the conditioned air blown out from the outlet to the front seats and the rear seats; A thermal environment detecting means detects the indoor thermal environment, and when the thermal environment detecting means detects that the thermal environment of the front seat is in a steady state, the wind direction variable means and the air volume variable means are operated. The air conditioner for an automobile is characterized by having a control means for distributing air to the air conditioner.

1 animal The present invention will be explained below based on the drawings.

FIG. 1 shows the configuration of an automobile air conditioner according to the present invention, and FIGS. 2 to 5 are diagrams showing a first embodiment of the first invention.

In this automotive air conditioner, an inside/outside air switching door 1 is operated by an actuator 2, and inside air or outside air is introduced by a proa fan 3, which is part of an air volume variable means rotated by a proa fan motor 4, and passed through an evaporator 5. A part of this cold air is made to pass through the heater core 6 by the air mix door 7 rotated by the actuator 8 to become hot air, and is mixed with the cold air that bypassed the heater core 6 in the downstream region to make a suitable temperature air. Conditioned air is blown out from the outlet of the maintenance panel 33 to air-condition the front seats 14, 15 and the rear seats 40 in the vehicle interior.

Air outlet is center vent 17.18, side vent 16
．． 19. It is provided as a defroster 20. The actuator 10 rotates the ventilator door 9, which is part of the wind direction variable means and the air volume variable means, to select the outlet and adjust the air volume, and the actuator 12 rotates the ventilator door 9, which forms part of the wind direction variable means and the air volume variable means. 11 to select the outlet at the foot or the defroster 20 and adjust the air volume to blow out the conditioned air. Of this outlet,
Actuators 32 are installed in the air outlets at almost both ends of the instrument panel 33, which are provided facing the occupant seated in the front seats 14.15, the side vents 16.19, the air outlets in the center, and the center vents 17 and 18. An air volume and direction setting device 31, which forms a part of the air volume variable means and the wind direction variable means connected to the air flow rate variable means and the wind direction variable means, is attached so as to be able to be opened/closed and oscillated. The air volume and direction setting device 31 is composed of a valve that adjusts the air volume and a louver fin that changes the air direction. Furthermore, in the present invention, an outside temperature sensor 24 and a front seat room temperature sensor 25 are provided.
, a room temperature setting device 265, a solar radiation sensor 27, a rear seat room temperature sensor 29, and other thermal environment detection means for detecting environmental conditions required for air conditioning. Rear seat room temperature sensor 29
is installed near the rear seat 40, for example, at the rear end of the accessory compartment 30 extending from between the front seats 14 and 15 to the rear seat 40 side, in order to measure the ambient temperature representative of the temperature around the rear seat occupant. It is being This rear seat room temperature sensor 29 is connected to the front seat 14,
Even on the back side of the seat back of No. 15, which is the surface on the rear seat 40 side,
It can also be provided in the rear seat 40 itself. The controller 28, which is a control means consisting of a microcomputer, receives information signals from the thermal environment detection means and outputs them to the proafan motor 4, each actuator 8, 10, 12, 32 to control the temperature, air volume, air direction, and air outlet. are doing.

The automobile air conditioner having such a configuration is controlled by changing the direction and volume of the conditioned air blown to the front seats 14 and 15 and the direction and volume of the conditioned air blown to the rear seats 40. For example, when the occupants are only in the front seats (14.15), as is the case with most cars, or when the air conditioning capacity is insufficient due to cool-down, etc., and the front seats are the main consideration, which affects safe driving. , front seat 14.15
The direction of the wind is concentrated on the occupants of the vehicle, and the air is distributed more to the front seats 14,15.

FIG. 3 shows a case where only the front seats 14, 15 are to be strongly air-conditioned, and both the side vents 16, 19 and the center vents 17, 18 of the air outlets are designed to hit the front seat occupants. In such a case, the air volume/direction setting device 31 concentrates the air direction on the front seat occupant. When the front seat side is in a steady state and the room is to be evenly air-conditioned, the amount of air distributed to the rear seat 40 is increased. FIG. 4 shows the air distribution state that is used in such a case, or when the rear seat 40 is mainly cooled after the front seat is rapidly cooled down in a cool-down or the like. That is, side vent 1
From 6.19, a very small amount of conditioned air is concentrated or diffused to the front seat occupants, and from center vent 17.18, a large amount of conditioned air is concentrated to pass between front seats 14.15. will be sent.

Note that the air volume can also be controlled by the proa fan 3 and the doors 9 and 10.

Next, an example of such control will be explained with reference to the flowchart shown in FIG.

First, in step 101, the outside temperature Ta detected by the outside temperature sensor 24, the front seat temperature τicf detected by the front seat room temperature sensor 25, and the rear seat room temperature Ti detected by the rear seat room temperature sensor 29.
cb, room temperature set value Tset set by the room temperature setting device 26
And the amount of solar radiation S detected by the amount of solar radiation sensor 27 is input into the controller 28 as data.

In step 102, the average value of the room temperature Ticf and Ticb of the front and rear seats (Ticf + Ticb
) / Take 2.

In step 103, the representative room temperature Tie and the set room temperature Tse are
t, and based on the calculated value, a proafan applied voltage setting value Vfan, which is one of the air conditioning means, is calculated. The proa fan motor 4 is driven by this proa fan applied voltage setting value Vfan, and the air volume is adjusted by the rotation of the proa fan 3. Namely.

If the deviation is around 0°C, it means that the thermal environment inside the vehicle is good, so the applied voltage is kept low and constant.

Reduce the amount of air distributed by Proa Fan 3 (equivalent to 0 on the fan)
If the deviation is large, the applied voltage is kept high and constant to increase the air distribution volume of the proa fan 3 (equivalent to fan Hi), and if the deviation is in the middle, the applied voltage changes linearly according to the deviation. The applied voltage setting value Vfan to the proafan motor 4 is calculated as follows.

In step 104, a target outlet temperature Tof is calculated based on the input data value in step 101 and the calculated value of the representative room temperature Tie in step 102. This target blowing temperature Tof is expressed by the following formula.

Tof= A4a+ B-Tic+ C4set+
Calculated by D-S + E-(1). here,
A, B, C, D, and E are constants.

In step 105, the opening degree xtI of the air mix door 7, which is one of the air conditioning means, is calculated based on the target blowout temperature τof determined by equation (1). This opening degree or the following formula:
...... Calculated according to (2). here,
F, G, and H are constants.

In step 106, the air outlet mode is changed to vent mode (air blows primarily toward the upper body of the front seat occupant), pie level mode (air blows mainly toward the upper body of the front seat occupant), and
For example, the heater mode is set to 28°C.
As described above, the pie level mode is determined in the range of 23 to 33°C, and the vent mode is determined in the range of 23°C or lower.

In step 107, it is determined whether the outlet mode is the vent mode, and if it is the vent mode, the process moves to step 108, and if not the vent mode, the process moves to step 116.

In step 10g, the front seat room temperature Ticf is the room temperature set value Ts.
It is determined whether it is close to or far from et, specifically whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 2°C. If the deviation falls within this condition, the process moves to step 109; otherwise, the process moves to step 115. That is, when the deviation is 2°C or more, it is determined that the state is not steady, and in step 115, the front seat temperature Ticf is quickly set to the room temperature set value Tse.
In order to get closer to t, the air outlet is concentrated in the front seats as shown in Figure 3. Side vent 16.19. Center vent 17.1
Opening the valve of the air volume/direction setting device 31 at No. 8 concentrates the louver fins on the front seat occupant.

When the deviation is 2°C or less, it is determined to be a steady state and step 109
Proceed to.

In step 109, the rear seat room temperature Ticb is set to the room temperature set value T.
It is determined whether it is close to or far from set, specifically whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 2°C. If the deviation is within this condition, the process moves to step 110, where the center vents 17.18 set the blowing direction to remain in the direction of the front seat occupant, and then the process moves to step 111, where the center vents 17.18 and side vents The air volume ratio with 16.19 is set to 5=5, that is, the same amount. and step 1
12, the air volume is set to the L0 level (the lowest air volume when the proa fan is not stopped), and the process moves to step 116.

On the other hand, if the deviation between the rear seat room temperature Ticb and the room temperature set value Tsat does not fall under the condition of less than 2°C, step 113
8, and the direction of the air blowing from the center vents 17 and 18 is changed from the direction of the front seat occupants to the direction of the rear seat occupants. Furthermore, the process moves to step 114, and the air distribution ratio between the center vent 17°18 and the side vent 16.19 is changed from 5:5 to 8=2, and as shown in FIG. A large amount of cold air is blown towards the passenger side.

The process moves to step 116. (At this time, the air volume of the floor fan can be maximized and the vent outlet can also be closed.) In step 116, the proa fan applied voltage setting value Vfan calculated in step 103 is output to the proa fan motor 3. In step 117, the output is output to each door actuator 8, 10.12 to set each door 7.9.11 to a predetermined opening degree. When one loop is completed in this way, the process returns to step 101 and this loop is repeated again.

In this way, once a thermal environment that can ensure the comfort of the front seat occupants is reached, the center vent air direction that was directed toward the front seat occupants is directed toward the rear seat occupants, and the center vents and side vents are By resetting the air volume ratio,
A low volume of cold air is blown to the front seat occupants to prevent them from getting too cold, and a large amount of cold air is blown to the rear seat occupants by directing the center vent toward the rear seats, which improves the thermal environment of the occupants as quickly as possible. The condition can be improved. This is useful in cars that cannot afford to have a separate air conditioner for the rear seats, since there is a high probability that the driver will only be riding in the front seats, and it helps the driver to quickly get comfortable and drive safely. In particular, this device can be used as is in cars with separate front seats.

In this example, side vents 16, 19. Although the air volume adjustment at each vent of the center vents 17 and 18 is not explained, the air volume can be adjusted by adjusting the valve of the air volume and direction setting device 31 for each vent.

6 to 10 show a second embodiment of the first invention, in which the first embodiment is a center vent 17 serving as an air outlet.
ia is directed toward the rear seat 40, whereas this embodiment sends conditioned air to the rear seat 40 using the defroster 20 as an air outlet.

An example of control in the second embodiment will be explained with reference to a flowchart shown in FIG.

First, in step 201, the outside temperature Ta detected by the outside temperature sensor 24, the front seat temperature Ticf detected by the front seat room temperature sensor 25, and the rear seat temperature Ticf detected by the rear seat room temperature sensor 29 are determined.
cb, room temperature set value Tset set by the room temperature setting device 26
And the amount of solar radiation S detected by the amount of solar radiation sensor 27 is input into the controller 28 as data.

In step 202, the average value (Ticf + Ti
cb)/2.

In step 203, the representative room temperature Tic and the set room temperature Tse are
t, and based on the calculated value, a proafan applied voltage setting value Vfan, which is one of the air conditioning means, is calculated. The proa fan motor 4 is driven by this proa fan applied voltage setting value Vfan, and the air volume is adjusted by the rotation of the proa fan 3. Namely.

If the deviation is close to O"C, it means that the thermal environment inside the vehicle is good. Therefore, keep the applied voltage low and constant, and reduce the air distribution amount of the Proa fan 3 (equivalent to 0 on the fan), if the deviation is large. For Proafan 3, the applied voltage is kept high and constant.
The applied voltage setting value Vfan to the proa fan motor 4 is calculated so that the air distribution amount is increased (equivalent to fan Hi), and the applied voltage changes linearly according to the deviation when the deviation is in the middle. .

In step 204, a target outlet temperature Tof is calculated based on the input data value in step 201 and the calculated value of the representative room temperature Tic in step 202. This target blowing temperature Tof is calculated by the following formula: Tof=A4a+B4ic+C45et+D-5+E=
Calculated by (3). Here, A, B, C, D, E
is a constant.

In step 205, the opening degree X of the air mix door 7, which is one of the air conditioning means, is calculated based on the target blowout temperature Tof determined by equation (3). This opening degree is calculated by the following formula: X=F-Tof"+G-Tof+H---(4), where F, G, and H are constants.

In step 206, the air outlet mode is changed from the target air outlet temperature Tof calculated by equation (3) to vent mode (air blows mainly towards the upper body of the front seat passenger), pie level mode (air blows mainly towards the upper body of the front seat passenger),
Decide on either the heater mode (air blows out to both the upper and lower body of the front seat occupant) or the heater mode (air blows out to the feet of the front seat occupant)1 For example, the heater mode is set to 28°C.
As described above, the pie level mode is determined in the range of 23 to 33°C, and the vent mode is determined in the range of 23°C or lower.

In step 207, it is determined whether the outlet mode is the vent mode, and if it is the vent mode, the process moves to step 20g, and if not the vent mode, the process moves to step 212.

In step 208, the front seat room temperature Ticf is set to the room temperature set value Ts.
A steady state is determined based on whether it is close to or far from et, specifically, whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 5°C. When the deviation is within this condition, it is considered to be in a steady state,
The process moves to step 209, and if it is not, it is assumed that the steady state is not established and the process moves to step 212. That is, in step 212, the front seat temperature Ticf is quickly set to the room temperature set value Ts.
In order to approach the airflow, the mode is set such that the air is concentrated in the front seat, and the process proceeds to step 213, where the applied voltage is output to the proa fan motor 4.

If the steady state has been reached, the process advances to step 209.

It is determined whether the rear seat room temperature Ticb is close to or far from the room temperature set value Tset, specifically whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 2°C. When the deviation is within this condition, the air conditioning of the rear seats is completed, and the process moves to step 210, where the side vents 16, 19 and center vents 17 are turned on.
．． Only 18 ventilator blowouts are set, and the process further proceeds to step 213.

On the other hand, if the deviation between the rear seat room temperature Ticb and the room temperature set value Tset does not fall within the condition of less than 2°C, the process moves to step 211 to increase the comfort of the rear seats, and the air distribution ratio between the defroster blowout and the ventilator blowout is adjusted. calculate. That is, if the deviation is small, the air volume ratio of the defroster 20 is increased, and if the deviation is large, the air distribution ratio of the ventilator outlets 16 to 19 is increased. 7 and 8 are state diagrams in which the front seats 14 and 15 and the rear seats 40 are air-conditioned only by ventilator blowout, and FIGS.
6 is a state diagram in which conditioned air is sent to the rear seat 40 for air conditioning.

That is, a large amount of cold air is blown from the defroster 20 toward the rear seat occupant, and the process moves to step 213.

In step 213, the proa fan applied voltage setting value Vfan calculated in step 203 is output to the proa fan motor 3, and in step 214, it is output to each door actuator 8.10.12 to set each door 7.9.11 to a predetermined value. Set to opening. After completing one loop in this way, the process returns to step 201 and repeats this loop again.

In this way, once a thermal environment that can ensure the comfort of front seat passengers is reached, conditioned air is blown out from the defroster, the wind direction is directed toward the rear seat passengers, and the air distribution ratio between the ventilator blowout and the defroster blowout is By setting the , a low amount of cold air is blown to the front seat passengers to prevent them from getting too cold, and a large amount of cold air is blown to the rear seat passengers to reduce the heat aIR condition of the passengers as soon as possible. It can be improved.

In this embodiment, the defroster, which was previously used only for defrosting the front window glass, can be used for air conditioning the rear seats, and the already provided mechanism can be used effectively.

By the way, when the air distribution ratio from the defroster 20 is set to 100% and the air volume is increased, the cold air may cause some water droplets to adhere to the lower side of the outside of the front window. This is because moisture contained in the outside air reaches the dew point temperature and adheres to the surface. However, experiments have shown that if the air distribution ratio is 50% or less, there is no problem in ensuring visibility.

In addition, while controlling the air distribution ratio to the defroster 20,
It is also possible to control the air conditioned air at the vent outlet to concentrate or diffuse it.

11 to 13 show a third embodiment of the first invention, in which the first embodiment is a center vent 17 serving as an air outlet.
18 is directed so that the air conditioned air is directed from between the front seats 14 and 15 toward the rear seats, and while in the second embodiment the air conditioned air is sent from the defroster 20 as an air outlet to the rear seats, in this example, the air outlet is As center vent 17.18, side vent 16.1
9 is directed upward to send air conditioned air to the rear seat 40.

An example of control in the third embodiment will be explained with reference to a flowchart shown in FIG.

First, in step 301, the outside temperature Ta detected by the outside temperature sensor 24, the temperature Tie detected by the front seat room temperature sensor 25 and the rear seat room temperature sensor 29, and the average value set as a representative room temperature, for example, is set by the room temperature setting device 26. The room temperature set value Ts
et and the amount of solar radiation S detected by the amount of solar radiation sensor 27 is input to the controller 28 as data.

In step 302, the representative room temperature Tic and the set room temperature Tse are
t, and based on the calculated value, a proafan applied voltage setting value Vfan, which is one of the air conditioning means, is calculated. The proa fan motor 4 is driven by this proa fan applied voltage setting value Vfan, and the air volume is adjusted by the rotation of the proa fan 3. In other words, if the deviation is around 0 degrees Celsius, it means that the thermal environment inside the vehicle is good, so the applied voltage is kept low and constant, the amount of air distributed by the pro fan 3 is reduced (equivalent to 0 on the fan), and the deviation is large. In this case, the applied voltage should be kept high and the air distribution volume of Proafan 3 should be increased (equivalent to fan Hi), and if the deviation is between these, the Proafan should be adjusted so that the applied voltage changes linearly according to the deviation. A voltage setting value Vfan to be applied to the motor 4 is calculated.

In step 303, a target outlet temperature Tof is calculated based on the input data value in step 301. This target blowing temperature Tof is calculated by the following formula: Tof=A4a+B4
It is calculated by ic+C-Tset+D-8+E=(5). Here, A, B, C, D, and E are constants.

In step 304, the opening degree X of the air mix door 7, which is one of the air conditioning means, is calculated based on the target blowout temperature Tof determined by equation (5). This opening degree X is a quadratic formula, that is.

X = F-Tof” + G-Tof+ H---(
6) is calculated. Here, F, G, and H are constants.

In step 305, the air outlet mode is set to vent mode (mainly blows air toward the upper body of the front seat occupant), pie level mode (air blows mainly toward the upper body of the front seat occupant), and
For example, the heater mode is set to 28°C.
As described above, the pie level mode is determined in the range of 23-33°C, and the vent mode is determined in the range of 23°C or lower.

In step 30G, it is determined whether the outlet mode is the vent mode, and if it is the vent mode, the process moves to step 307, and if it is not the vent mode, the process moves to step 310.

In step 307, the front seat room temperature Tic is set to the room temperature set value Tse.
It is determined whether it is close to or far from t, specifically whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 3°C.

When the deviation falls within this condition, the process moves to step 308 in order to actively cool the rear seats, and when the deviation does not fall within this condition, the process moves to step 309. That is, step 30
In step 9, in order to quickly bring the environment of the front seats 14 and 15 close to the room temperature set value Tset, the vent blow direction is set to the front seat passenger chest as shown in FIG. 12, and the front seat concentrated air blow is made. Opening the valves of the air volume and direction setting devices 31 of the side vents 16, 19 and center vents 17 and 18 causes the louver fins to cause the air-conditioned air to concentrate and hit the front seat occupant's chest. After this, step 3
Move to 10.

In step 308, as shown in FIG. 13, the vent blowing direction is set above the head of the front seat occupant, and the conditioned air is sent to the rear seat 4o. That is, the horizontal louver fins of the air volume and direction setting devices 31 of the side vents 16 and 19 and center vents 17 and 18 of the air outlet are directed upward to change the direction of the air from the front passenger direction to the rear seat passenger direction.

Of the air outlets, only either the side vent 16.19 or the center vent 17.18 may be controlled. Then, the process moves to step 310.

In step 310, the proa fan applied voltage setting value Vfan calculated in step 302 is output to the proa fan motor 3, and in step 311, it is output to each door actuator 8.10.12 to set each door 7.9.11 to a predetermined value. Set to opening. After completing one loop in this way, the process returns to step 301 and repeats this loop again.

In the case of this embodiment, the front seats 14 and 15 are not of the separate seat type but can also be applied to a bench seat type.

Note that although the methods of air conditioning the rear seats are separately listed in the first to third embodiments, it goes without saying that the air conditioning can be performed in various combinations of these.

FIG. 14 shows an embodiment of this second invention.

This is an addition of air volume control to the control of the first invention.

Therefore, the first embodiment of the first invention described above also represents an embodiment of the second invention.

An example of the control according to the second invention will be explained with reference to the flowchart shown in FIG.

First, in step 401, the outside temperature Ta detected by the outside temperature sensor 24, the front seat temperature Ticf detected by the front seat room temperature sensor 25, and the rear seat temperature Ticf detected by the rear seat room temperature sensor 29 are determined.
cb, room temperature set value Tset set by the room temperature setting device 26
And the amount of solar radiation S detected by the amount of solar radiation sensor 27 is input into the controller 28 as data.

In step 402, the average value (Ticf + Ti
cb)/2.

In step 403, the representative room temperature Tic and the set room temperature Tse are
The deviation from t is calculated, and based on the calculated value, a proafan applied voltage set value Vfan, which is one of the air conditioning means, is outputted. The proa fan motor 4 is driven by this proa fan applied voltage setting value Vfan, and the air volume is adjusted by the rotation of the proa fan 3. In other words, if the deviation is around 0 degrees Celsius, it means that the thermal environment inside the vehicle is good, so the applied voltage is kept low and constant, the amount of air distributed by the pro fan 3 is reduced (equivalent to 0 on the fan), and the deviation is large. In this case, the applied voltage should be kept high and the air distribution volume of Proafan 3 should be increased (equivalent to fan Hi), and if the deviation is between these, the Proafan should be adjusted so that the applied voltage changes linearly according to the deviation. A voltage setting value Vfan to be applied to the motor 4 is calculated.

In step 404, a target outlet temperature Tof is calculated based on the input data value in step 401 and the calculated value of the representative room temperature Tie in step 402. This target blowing temperature Tof is calculated by the following formula: Tof=A4a+B 4ic+C45et+D
−8+ E− Calculated by (7). Here, A, B
, C, D, and E are constants.

In step 405, the opening degree X of the air mix door 7, which is one of the air conditioning means, is calculated based on the target blowout temperature Tof determined by equation (7). This opening degree X is determined by the following formula: X=F-TOf2+G-TOf+H...
Calculated by (8). Here, F, G, and H are constants.

In step 406, the air outlet mode is set to vent mode (mainly blows air towards the upper body of the front seat occupant), pie level mode (air blows mainly towards the upper body of the front seat occupant), based on the target air outlet temperature Tof calculated by equation (7).
For example, the heater mode is set to 28°C.
As described above, the pie level mode is determined in the range of 23 to 33°C, and the vent mode is determined in the range of 23°C or lower.

In step 407, it is determined whether the outlet mode is the vent mode, and if it is the vent mode, the process moves to step 408, and if not the vent mode, the process moves to step 416.

In step 408, the front seat room temperature Ticf is set to the room temperature set value Ts.
It is determined whether it is close to or far from et, specifically whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 5°C. When the deviation is within this condition, the front seat is determined to be in a steady state and the process proceeds to step 409; when it is not, it is determined to be unsteady and the process proceeds to step 415. That is, step 4
At step 15, in order to bring the front seat temperature Ticf closer to the room temperature set value Tset quickly, the front seat central air blowing is performed as shown in FIGS. 3 and 12.

Side vent 16.19. Opening the valves of the air volume and direction setting devices 31 of the center vents 17 and 18 concentrates the louver fins on the front seat occupants.

If it is in a steady state, proceed to step 409 and check the rear seat temperature Tic.
It is determined whether b is close to or far from the room temperature set value Tset, specifically whether the deviation between the two is within a predetermined value. In this example, the determination is made based on whether the deviation is less than 2°C. When the deviation is within this condition, it is determined that the air conditioning of the rear seats is sufficient, and the process moves to step 410, where the center vents 17 and 18 set the airflow direction to remain in the direction of the front seat occupants.
Further, the process moves to step 411, and the center vent 17
．． The air volume ratio between ig and side vent 16.19 is so
: set to so, that is, equal amounts. and step 4
Move to 12 and increase the air volume.

Level (minimum air volume when Proa fan is not stopped)
, and the process moves to step 416.

On the other hand, if the deviation between the rear seat room temperature Ticb and the room temperature set value Tsat does not fall within the condition of less than 2°C, it is determined that the rear seat air conditioning is not sufficient, and the process moves to step 413, where the louver fins of the air volume and direction setting device 31 are adjusted. The direction of the air blowing from the center vents 17 and 18 is temporally changed between the direction of the front seat occupant and the direction of the rear seat occupant by the swinging operation. A suitable period for this period is 10 to 30 seconds. Furthermore, the process moves to step 414, and the wind direction of the center vent 17, 18 is changed over time so that the wind direction is adjusted to the rear seat 1.
4.15, the Proafan 4.15 is the air volume variable means. Door 9.11. Operate the air volume and direction setting device 31 to set the air volume ratio between the front seat 14°15 and the rear seat 40 to 50.
: The ratio is changed from 50 to 8:2, and a large amount of cold air is blown from the center vent 17, 18 to the rear seat passenger side as shown in FIGS. 4, 7, and 8, for example, and the process moves to step 416.

In step 416, the pro fan applied voltage setting value Vfan calculated in step 403 is output to the pro fan motor 3, and in step 417, it is output to each door actuator s, io, 12 to set each door 7.9.11 to a predetermined value. Set to opening. After completing one loop in this way,
Further, the process returns to step 401 and repeats this loop again.

Therefore, if the wind direction is towards the rear seat passengers, the amount of air flowing from the center vent toward the rear seats will be increased.

Since the rear seats are sufficiently air-conditioned, the front seats have a low air volume, which prevents them from getting too cold, for example. Also.

When cold air is periodically distributed to the front and rear seats, a slight amount of sweat occurs when the seats are not directly exposed to the wind, and this sweat evaporates when the air is distributed, removing the evaporative heat from the skin, making the occupants feel cold. Feeling comfort can be further improved. That is, it is possible to provide the front seat occupants with a diffusion wind effect, and to prevent the rear seat occupants from deteriorating the thermal environment due to the windless state.

As explained above, according to the first and second inventions, there are limited air conditioners that cannot air-condition the entire vehicle interior at the same time, such as a single air conditioner that has an air outlet only near the instrument panel. Even if the vehicle does not have air conditioning capacity, the front seats are always kept at the desired thermal environment temperature, and then air is distributed to the rear seats, so front seat passengers always enjoy air conditioning comfort. In addition, even if rear seat passengers are initially a little uncomfortable, once the front seats have stabilized, air is distributed to the rear seats without weakening the air conditioning inside the vehicle like in the past, which improves air conditioning comfort. can be obtained.

Therefore, by repeating such control, the occupants inside the vehicle can always enjoy comfortable air conditioning.

Furthermore, the second invention not only directs the direction of the conditioned air toward the rear seats, but also changes the amount of air conditioned air distributed between the front seats and the rear seats, allowing for more precise control.

[Brief explanation of the drawing]

1 to 14 are related to this invention. FIG. 1 is a block diagram showing the configuration of this invention, FIG. 2 is a schematic configuration diagram showing an embodiment of this invention, and FIGS. FIG. 5 is a flowchart showing the first embodiment, FIG. 6 is a flowchart showing the second embodiment of the first invention, and FIGS. Figure 8 is a side view and plan view of the interior of the vehicle, showing how the center vent is used to send conditioned air to the rear seats, and Figures 9 and 10 are where the defroster is used to send conditioned air to the rear seats. FIG. 11 is a side view and a plan view of the inside of the vehicle interior showing the state, and FIG. 11 is a flowchart showing the third embodiment of the first invention. FIGS. 12 and 13 are state diagrams of the interior of the vehicle in which the front seats and rear seats are air-conditioned, respectively, and FIG. 14 is a flowchart showing one embodiment of the second invention. 3, 9.11.31...Air volume variable means 9.11.31
...Wind direction variable means 16-20...Air outlets 25, 29...Thermal environment detection means 28...Control means

Claims (2)

[Claims] (1) In an automobile air conditioner that blows out conditioned air from an outlet in an instrument panel at the front of the vehicle interior to air condition the front and rear seats in the vehicle interior, the conditioned air blown out from the outlet is directed to the front seats and the rear seats. A wind direction variable means for changing the direction of air distributed to the rear seats; a thermal environment detecting means for detecting the thermal environment in the vehicle interior; and a detecting means for detecting that the thermal environment of the front seats has reached a steady state. and control means for distributing air to a rear seat by operating the wind direction variable means. (2) In an automobile air conditioner that blows out conditioned air from an outlet in an instrument panel at the front of the vehicle interior to air condition the front seats and rear seats in the vehicle interior, the conditioned air blown out from the outlet is directed to the front seats and the rear seats. a wind direction variable means for changing the direction of air distributed to the rear seats; an air volume variable means for changing the amount of air conditioned air blown out from the outlet to the front seats and the rear seats; a thermal environment detection means for detecting; and control for distributing air to the rear seats by operating the wind direction variable means and the air volume variable means when the thermal environment detection means detects that the thermal environment of the front seat is in a steady state. An air conditioner for an automobile, characterized in that it has means.